@export_const Float begin
    metre = 1e2
    meter = metre
    cm = metre / 1e2
    mm = metre / 1e3
    um = metre / 1e6
    nm = metre / 1e9

    second = 1e3
    ms = second / 1e3
    Hz = 1 / second

    voltage = 1e3
    mV = voltage / 1e3

    ampere = 1e6
    mA = ampere / 1e3
    uA = ampere / 1e6
    nA = ampere / 1e9

    farad=1e6
    uF = farad/1e6
    ufarad = uF

    siemens = 1e3
    mS = siemens / 1e3
    msiemens = mS
    nS = siemens / 1e9
    nsiemens = nS
end
